DIN (data in — from the MCU or the previous segment's DOUT; follow the printed arrows)
+5V
DOUT (data out — to the next segment in the chain; the three output pads mirror the input ones)
A ~300–500Ω series resistor on DIN and a bulk capacitor across +5V/GND are recommended for longer strips
विनिर्देश
LED
WS2812B, 5050 package with built-in driver
सप्लाई वोल्टेज
5 V (chip rated 3.5–5.3 V)
Data input high
≥ 0.7 × VDD (3.5 V at 5 V supply)
प्रोटोकॉल
Single-wire, 800 kHz
Colour depth
24-bit (8 bits per channel)
Current per pixel
≈ 60 mA at full white
Common densities
30, 60 or 144 LEDs/m
Series resistor on DIN
300–500 Ω recommended
Bulk capacitor
≈ 1000 µF across +5 V/GND recommended
नोट्स
~60mA per pixel at full white (20mA per color channel × 3) is the standard budgeting figure — a modest 60-pixel strip at full white wants up to 3.6A, far past what a microcontroller’s own 5V pin (or its USB port) can supply.
Past a handful of pixels, inject power directly into the strip’s own VCC/GND (not through the microcontroller) from a supply sized for the worst case — every pixel at full white — even if the actual animation rarely reaches that; a strip that browns out mid-animation is a power problem, not a code bug.
